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#include "cctk.h"
#include "cctk_Parameters.h"
#include "cctk_Arguments.h"
#include "cctk_Functions.h"
subroutine Lego_FixedSphere(CCTK_ARGUMENTS)
implicit none
DECLARE_CCTK_ARGUMENTS
DECLARE_CCTK_PARAMETERS
DECLARE_CCTK_FUNCTIONS
integer ierr
if (CCTK_IsThornActive(CCTK_THORNSTRING) == 0) then
call CCTK_WARN (0, "The routine Lego_FixedSphere was called, but thorn " // CCTK_THORNSTRING // " is not active")
end if
! Only excise if there would be more than a single grid point excised
if (fixed_size < 2*minval(CCTK_DELTA_SPACE(:))) return
if (CCTK_EQUALS(fixed_excision,"sphere")) then
where ((x - fixed_origin_x)**2 + (y - fixed_origin_y)**2 + (z - fixed_origin_z)**2 < fixed_size**2)
emask = 0.d0
elsewhere
emask = 1.d0
end where
else if (CCTK_EQUALS(fixed_excision,"cube")) then
where (max(abs(x - fixed_origin_x), abs(y - fixed_origin_y), abs(z - fixed_origin_z)) < fixed_size)
emask = 0.d0
elsewhere
emask = 1.d0
end where
end if
call excision_findboundary (ierr, emask, cctk_lsh(1), cctk_lsh(2), cctk_lsh(3))
end subroutine Lego_FixedSphere
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